US Bridges

S.H. 17A over Washita River

Fair

Garvin County, Oklahoma · 0.8 MI E I-35 · Structure no. 179560000000000

Built
1970
55 years old, rebuilt 2013
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
803 ft
8 main spans
Daily traffic
1,900
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 17A over Washita River is a steel stringer/multi-beam or girder carrying S.H. 17A over Washita River in Garvin County, Oklahoma. It was built in 1970 and reconstructed in 2013, so it is 55 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,900 vehicles a day, roughly 15% of them trucks, projected to reach 3,040 by 2042. The structure is 803 ft (244.8 m) long and 32 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesS.H. 17A
CrossesWashita River
Location0.8 MI E I-35
RouteState Highway 17A
CountyGarvin County
StateOklahoma
Coordinates34.62267, -97.20143
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length803 ft (244.8 m)
Longest span100 ft (30.5 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2022)
Projected traffic3,040 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 17A over Washita River built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2013.

What condition is S.H. 17A over Washita River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does S.H. 17A over Washita River carry?

About 1,900 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 17A over Washita River?

The structure is 803 ft (244.8 m) long with a longest span of 100 ft (30.5 m) and a deck 32 ft wide.

Who owns S.H. 17A over Washita River?

It is owned by the State Highway Agency.